Trailer dolly



FIG. 1 is a perspective view of a trailer dolly, showing my new design with a trailer hitch mount;

FIG. 2 is a second perspective view thereof, without the trailer hitch mount;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken lines in the drawings depict portions of the trailer dolly that form no part of the claimed design. 

CLAIM The ornamental design for a trailer dolly, as shown and described. 